MESON Chess Problem Database

Problem Display
PID: 199346 (5Kbk/7B/4p3/4p2p/4P2P/8/6P1/3Q4 w - - 0 1)

Groeneveld, Cornelis

Freie Presse, 2001

(First published on Fri Jul 27 2001)

5Kbk/7B/4p3/4p2p/4P2P/8/6P1/3Q4

#2

6 + 5

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh7
      • 2.Qxh5#
  • Tries
    • 1.Bg6?
      • 1...Bf7
        • 2.Qxh5#
      • 1...Bh7!
    • 1.Qf3?
      • 1...Kxh7
        • 2.Qxh5#
      • 1...Bxh7
        • 2.Qf6#
      • 1...Bf7!
    • 1.Qg4?
      • threat
        • 2.Qg7#
        • 2.Qxg8#
      • 1...Kxh7
        • 2.Qxh5#
        • 2.Qg7#
      • 1...Bxh7
        • 2.Qg7#
      • 1...Bf7
        • 2.Qg7#
      • 1...hxg4!
  • Keys
    • 1.Qxh5!
      • threat
        • 2.Bxg8#
      • 1...Bxh7
        • 2.Qxe5#
      • 1...Bf7
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);OGATEB,P-FLIGHT,XB(E)::QAR2(A),XP(b)
  • Tries
    • Try
      • B(E);
      • Vars
        • B(d);N_GUARD::QAR(A),XP(b)
      • Refutation
        • B(d);
    • Try
      • Q(A);
      • Vars
        • K(e);OGATEB,P-FLIGHT,XB(E)::QAR2(A),XP(b)
        • B(d);SBLOCK,XB(E)::QAB(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);XB(E)::QAB1(A)
        • B(d);::QAB1(A)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);XP(b)
    • Threat
      • QAR(A)+B(E),XB(d)
    • Vars
      • B(d);P_SPINB(d),SBLOCK,XB(E)::QAB(A),XP(a)
      • B(d);N_GUARD::QAR(A)+B(E)
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